Bolster cushion



Jan. 5 1926.

G. L. HARVEY HOLSTER CUSHION l Filed May 17 1924 2 Sheets-Sheet l Jan. 5 1926.'

G. L. HARVEY HOLSTER CUSHION Filed May 17 1924 Sheets-Sheetv 2` Patented Jan. 5, 1926". i UNITED STATES PATENT OFFICE.

GEORGE L. HARVEY, DECEASED, LATE OF CHICAGO, ILLINOIS; BY HELEN A. HARVEY AND KELLOGG FAIRBANK, EXECUTORS, OF CHICAGO, ILLINOIS.

BoLs'rER CUSHION.

Application filed May 17, 1924. Serial No. 714,034.

To all whom t may concern; 11 being joined at the angle by a portion 12. Be it known that GEORGE L. HAT-wur, de- These plates are constructed in pairs, the ceased, formerly a citizen of the United plates composing` a cooperative pair being States, and resident of Chicago, in the oppositely laterally deliected So that norcounty of Cook and State of Illinois, did mally only the edges of the plates are in invent certain new and useful Improvecontact. This is best illustrated in Fig. 4. 60 ments in Bolster Cushions, of which the fol When a force is applied tending to move lowing is a specification. one plate or a pair toward the other, fric- The invention relates to springs or cushtional resistance is encountered and the reions for bolsters of car trucks and parsistance increases as the area in contact inticularly to an improvement on the construe* creases due to the approach of the wings G5 tion shown in the prior patent to George to a parallel relation.

L; Harvey, No. 1,454,509, of May 8, In constructing the device of this inven- The improvement contemplates the adaption a plurality of pairs of plates con- ,15 tation of the shock-absorbing elements of structed as described are associated and conthe dra.ftrigging of said prior patent to a fined in proper relation between upper and 70 spring support for car bolsters. lower castings 13, 14. The lower casting One of the particular advantages in the is of skeleton construction and comprises use of the peculiarly shaped spring elements angularly inclined walls 15, 16, supported is the absence of any objectionable rebound. at their sides by walls 17, 18, and at their The reason for this is that unich of the force ends by walls 19, 20. The lower margins is absorbed by friction. This renders the of these walls are in a plane and the lower elements particularly useful for bolster surface is shaped to cooperate with the cushions. ordinary springseat of a car-truck side 25 A design is disclosed herein in which the frame. The walls 15, 16, constitute a spring plates which constitute the cushion tapered projection the angle of which corelements are confined in proper assembled responds to the angle of a plate resting relation between two castings, a tie memthereon. ber preventing separation but permitting rlhe upper casting includes walls 21, 22,

3U compression to the required extent. This angularly disposed and constituting a recess provides a cushion unit which may be easily shaped to correspond to the angular shape handled, shipped and installed in the usual of the upper surface of a spring plate. In

position Vwithout skill on the part of the order that the plates may be suitably conworkmen or possibility of error in the manfined against possible lateral movement, the ner of installation. side wings or aprons 23, 24, are provided The invention will be more readily which are integral with the top wall 25 90 understood by reference to the accompanyof the casting. The wings are stiffened by ing drawings, wherein, triangular webs 25a which project diagonal- Fig. 1 is an end View of a cushion unit ly downward from the top wall, and ocw consisting of pairs of plates and upper and cupy spaces in the notches in the spring lower confining members therefor; plates. Dowels 25b project upwardly from 95 Fig. 2 is a side view thereof; the top wall and may engage similarly Fig. 3 is a top plan View; shaped recesses in a bolster A, shown in Fig. 4 is a sectional vView on the line dotted lines in Figs. 1 and 2, and in full 45 4-4 of Fig. 1; lines in Fig. 4.

Fig. 5 is a sectional view on the line As a means for conining the plates in 100 5-5 of Fig. 2; and, a unit adapting the device for handling Fig. (i is a plan view of one of the fricand installation as such, the vertical bolts tion plates. or rivets 26 are provided, the heads of which w As before stated, the improvement is inare mounted within the space beneath the tended to utilize the friction plates disangular projection of the lower casting closed in the prior Harvey patent above while the opposite ends are passed through referred to. These plates are of angular the top wall 25 of the top casting. Prefform in end elevation, the side portions 10, erably the parts are riveted after being assembled and the springs are preferably slightly initially compressed. The posi?- tion or' the heads of the rivets relative to the base of the casting is such that freedom of verticalmovement is permitted to the extent of the full compression of the spring plates. This is possible because the space at the center of the angular projection is utilized as a chamber `for the reciprocation of the bolts. As will be understood, the shanks of the bolts pass through the plates at a point or" the end notches 27 therein.

A spring cushion constructed as described may be assembled complete in the factory and handled, shipped. and installed Without diicu-lty or possible error. Changes in the form shown may be made Without departure from the spirit of my invention.

rlhe claims are:

l. In a devce of the class described, the combination of a pair of opposed members each having surfaces disposed at an obtuse angle, the surfaces being convex on one member and concave on the other member, angular spring plates between said members, said plates being notched at the angle, one of said members having depending sido wings, and inside Webs for bracing said wings, said Webs being accommodated in the notches in the plates.

2. A device for providing spring support for bol'sters comprising in combination a supporting member oi skeleton construction providing plane su faces disposed at an obtuse angle in convex relation, a vertically arranged mating member of skeleton construction having oppositely disposed plane surfaces in concave relation, said last named member having depending side portions, Webs connecting the side portions to the main portions of said members, and spring plates held between said upper and lower members, said plates having portions adapted to cooperate with said concave and convex surfaces, the plates having side notches adapted to receive the web of the mating member.

Signed at Chicago, county of Cook and State of Illinois, this 9th day of Hay, 1924.

HELEN A. HARVEY, (7o-excentr@ of the last will mtl testament of George L. Harvey, (leceasetl.

KELLOGG FARBANK, Cb-executor of the last will wel testament of George L. Harvey, tleeeasecl. 

